overview-manual, ref-manual: Moved Pseudo and Fakeroot to overview manual

Fixes [YOCTO #12370]

The "Fakeroot and Pseudo" section is concepts and needed moved from the
ref-manual to the new concepts chapter of the overview-manual.  Some
links needed to be fixed as well.

(From yocto-docs rev: df2c09407abd5ca468fcd0bd9e241739907a9d63)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 0 insertions, 72 deletions

diff --git a/documentation/ref-manual/technical-details.xml b/documentation/ref-manual/technical-details.xml
index b30dfe8597..2b4f2d933c 100644
--- a/documentation/ref-manual/technical-details.xml
+++ b/documentation/ref-manual/technical-details.xml
@@ -13,78 +13,6 @@
         x32, Wayland support, and Licenses.
     </para>
 
-<section id='fakeroot-and-pseudo'>
-    <title>Fakeroot and Pseudo</title>
-
-    <para>
-        Some tasks are easier to implement when allowed to perform certain
-        operations that are normally reserved for the root user.
-        For example, the
-        <link linkend='ref-tasks-install'><filename>do_install</filename></link>
-        task benefits from being able to set the UID and GID of installed files
-        to arbitrary values.
-    </para>
-
-    <para>
-        One approach to allowing tasks to perform root-only operations
-        would be to require BitBake to run as root.
-        However, this method is cumbersome and has security issues.
-        The approach that is actually used is to run tasks that benefit from
-        root privileges in a "fake" root environment.
-        Within this environment, the task and its child processes believe that
-        they are running as the root user, and see an internally consistent
-        view of the filesystem.
-        As long as generating the final output (e.g. a package or an image)
-        does not require root privileges, the fact that some earlier steps ran
-        in a fake root environment does not cause problems.
-    </para>
-
-    <para>
-        The capability to run tasks in a fake root environment is known as
-        "fakeroot", which is derived from the BitBake keyword/variable
-        flag that requests a fake root environment for a task.
-        In current versions of the OpenEmbedded build system,
-        the program that implements fakeroot is known as Pseudo.
-    </para>
-
-    <para>
-        Pseudo overrides system calls through the
-        <filename>LD_PRELOAD</filename> mechanism to give the
-        illusion of running as root.
-        To keep track of "fake" file ownership and permissions resulting from
-        operations that require root permissions, an sqlite3
-        database is used.
-        This database is stored in
-        <filename>${</filename><link linkend='var-WORKDIR'><filename>WORKDIR</filename></link><filename>}/pseudo/files.db</filename>
-        for individual recipes.
-        Storing the database in a file as opposed to in memory
-        gives persistence between tasks, and even between builds.
-        <note><title>Caution</title>
-            If you add your own task that manipulates the same files or
-            directories as a fakeroot task, then that task should also run
-            under fakeroot.
-            Otherwise, the task will not be able to run root-only operations,
-            and will not see the fake file ownership and permissions set by the
-            other task.
-            You should also add a dependency on
-            <filename>virtual/fakeroot-native:do_populate_sysroot</filename>,
-            giving the following:
-            <literallayout class='monospaced'>
-       fakeroot do_mytask () {
-           ...
-       }
-       do_mytask[depends] += "virtual/fakeroot-native:do_populate_sysroot"
-            </literallayout>
-        </note>
-        For more information, see the
-        <ulink url='&YOCTO_DOCS_BB_URL;#var-FAKEROOT'><filename>FAKEROOT*</filename></ulink>
-        variables in the BitBake User Manual.
-        You can also reference this
-        <ulink url='http://www.ibm.com/developerworks/opensource/library/os-aapseudo1/index.html'>Pseudo</ulink>
-        article.
-    </para>
-</section>
-
 <section id="wayland">
     <title>Wayland</title>